{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "192321012",
    "entityType": "Track",
    "nonce": "0x5503df804f93127fed62ea4937f774a8487611e6100f829a1c89658fc2447367",
    "signature": "0x4f37051be22c6516f72eb0346de4f215385ad9d109323b163d73b439511ff99a517a02864b2f41ea29390465b77da0eb2cd690bf0b8caadd0c75a2be55aeea181c",
    "signer": "0x05aba01c97C4F182D989670622abE9c797782dD2",
    "userId": "508263176"
  }
}